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논문 리스트

2015
FE Simulation-based Process Design for Manufacturing Structural Members of Commercial Vehicle using Pipes with Rectangular Cross-Sections
한국정밀공학회
백경윤, 심도식
논문정보
Publisher
International Journal of Precision Engineering and Manufacturing
Issue Date
2015-04-01
Keywords
-
Citation
-
Source
-
Journal Title
-
Volume
16
Number
4
Start Page
723
End Page
733
DOI
ISSN
2234-7593
Abstract
Bent pipes are key components employed in vast quantities and diversities for satisfying the increasing demand for lightweight andhigh-strength products. Consequently, pipe bending has become an attractive manufacturing technology for lightweight productforming. This study examined the roll-bending process using a computer numerically controlled (CNC) profile bending machineequipped with three driving rolls. In this process, process design variables should be precisely designed to obtain smoothly curvedpipes with high precision and without defects. Specifically, the central roller position must be precisely determined by consideringspringback?which is inevitable in the cold-forming process. A numerical approach was applied to calculate the central roller positionfor producing the required curvature. The established FE model was compared with experimental results for validation and then usedto obtain the relationship between the central roller stroke and the final curvature of the bent pipe for various pipe material propertiesand cross-sections. The central roller position for producing the desired curvature was determined using a pipe deformation databaseobtained from a series of forming simulations, and the usefulness of the proposed numerical approach was evaluated.

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